Clevite bearings upper and lower rod bearing?
Do Clevite bearings have a upper and lower rod bearing? I removed the stock GM bearings out of this 1986 454 and they were marked upper and lower but I see no markings on the Clevites I bought.
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some do and some dont,bottom line is both upper and lower are the same.
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Not the same on chamfered bearings for aftermarket cranks that have large fillet in rod radius,be careful with this the rod cap will go on and will allow proper tourqe on rod fasteners but if installed wrong u will not have proper big end rod side clearance and will tear up edge of bearing fast
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Only the performance "H" bearings have uppers and lowers. Were the stock bearings actually GM parts ? If so is there a GM part number on them ? Do the replacements look like they are the same width as your originals ? What engine is it ? In 30 years I cant say that I have ever seen a GM engine with upper and lower on the bearings but there is always a first time :) I would be very careful to measure everything with the replacements.
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Originally Posted by BillK
(Post 4794815)
Only the performance "H" bearings have uppers and lowers. Were the stock bearings actually GM parts ? If so is there a GM part number on them ? Do the replacements look like they are the same width as your originals ? What engine is it ? In 30 years I cant say that I have ever seen a GM engine with upper and lower on the bearings but there is always a first time :) I would be very careful to measure everything with the replacements.
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Originally Posted by mike tkach
(Post 4794800)
some do and some dont,bottom line is both upper and lower are the same.
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